> What is the difference between an OT2 and an OT1+ besides packaging?
The OT1+ has 16k of code space and no demodulator chip - it's all
software based. The T2 has 60k of code space and a hardware
demodulator. As for software features:
OT1+:
Waypoint output to NMEA $GPWPL format only (like the Kenwoods, but with
full support for objects, items, and compression). KISS support will be
a separate firmware load, coming soon. WX firmware is also separate
(and easily switchable, no hardware changes needed). Remote control is
limited to turning on and off output pins. No command console, but you
can send plain text packets and CW beacons.
Tracker2:
Waypoint output to NMEA, Magellan, and Garmin, with symbol lookup (and
support for custom APRS symbols), and altitude and comments in waypoint
details. Full WIDEn-N digi with preemption. Text-based command
console, and remote access to almost all commands, including firmware
patching. Can run KISS, GPS, WX station, digipeater, and telemetry
concurrently.
The OT1+ kit is currently selling for $32, including the case. That's
with a 1 amp regulator, like the OT1x or the TinyTrak3+. The Tracker2
(OT2m version) will probably sell for around $85, assembled and tested.
The T2-135 is $75, since it's a simpler board and lacks the expensive
steel enclosure.
If you're comparing across manufacturers, the OT1+ is somewhere between
the TinyTrak3+ and the TinyTrak4, or at least what's planned for the
TT4. The Tracker2 is well beyond that, though it doesn't have 9600 baud
support.
Scott
N1VG